The developers of MP3+G Toolz are not active on the Internet anymore. I've tried to access their website and a generic page is displayed instead which means that now everything is discontinued, including the MP3+G Toolz application. Activation won't be possible anymore if it requires activation over the Internet.
I couldn't find a link to download the installer because all the links point to the same old website that is now discontinued.
As alternative, use the following application: http://www.powerkaraoke.com/src/prod_powercdgburner.php